155011420 has 24 divisors (see below), whose sum is σ = 327184704. Its totient is φ = 61688256.

The previous prime is 155011403. The next prime is 155011453. The reversal of 155011420 is 24110551.

155011420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15732 + ... + 23611.

It is an arithmetic number, because the mean of its divisors is an integer number (13632696).

Almost surely, 2^155011420 is an apocalyptic number.

155011420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155011420 is an abundant number, since it is smaller than the sum of its proper divisors (172173284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155011420 is a wasteful number, since it uses less digits than its factorization.

155011420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39549 (or 39547 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 155011420 is about 12450.3582277780. The cubic root of 155011420 is about 537.1817275677.

Adding to 155011420 its reverse (24110551), we get a palindrome (179121971).

The spelling of 155011420 in words is "one hundred fifty-five million, eleven thousand, four hundred twenty".